I have flashed my 401S to 811S and it burns DVD's beautifully. The question I have is that it will read my Imation CD-R's and I can run the burn using Nero for a VCD and the whole program cycles and the burn completes. Problem is that it doesn't burn, it just acts like it is. The red burn light is on but nothing transcribes to the CD. I have ordered a better quality CD but is there any way I can get the drive to burn to these disks. My firmware is ESOK and I have tried to upgrade to HS0Q but it doesn't work. So do I have 100 Imation coasters here? I have the same problem with my Lite-On LTR 52327S. I run XP pro.

but if you still have the ES0K firmware, doesn't that mean it's still a 401s. I had to get the latest version of flashfix, because the one with the z mod kit didn't read it. After that my new 811s has worked better than it ever did before..